CPE Chlorinated Polyethylene 135A CAS 63231-66-3
Chemical and Physical Properties:
Product Name : Chlorinated Polyethylene
Molecular Formula: CH2-CHCl-CH2-CH2 n
CAS No.:63231-66-3
Production description:
Chlorinated polyvinyl chloride (CPE) is a saturated polymer material with a white powder appearance, non-toxic and odorless, and has excellent weather resistance, ozone resistance, oil resistance, flame retardancy and coloring properties, chemical resistance and aging resistance, Good toughness (still flexibility at -30°C).
CPE is a kind of crystalized white fine particle elastomer with good softness, hydrogen atomsare in special high density polyethylene replaced by chlorine atoms. Low brittle temperature, weather resistance, aging resistance make it impact and additive
modifier.
Application:
CPE135A Have excellent toughness, weather resistance, oil resistance, flame retardant, coloring resistance, chemical and other properties, is compatible with plastics, rubber, excellent filling properties. Depending on the product performance. widely used in rigid PVC products, such as PVC profile, pipe, pipe fittings, sheet and wire etc.
Specification:
Item
CPE-135A
Apparent density,g/m³≥
0.48
Volatile,%
0.5
Thermal decomposition temperature,℃≥
165
Chlorine content,%
35±2
Particle size(0.9mm),≥
99% pass
Shore hardness,≤
65
Residual crystallinity,%≤
10
Number of impurity particles(25×60)c㎡
20
Chlorinated Polyethylene, CPE 135A, Impact Modifier Chlorinated Polyethylene HENAN JINHE INDUSTRY CO.,LTD , https://www.hnironoxide.com
Safety valves are important safety accessories on boilers, pressure vessels and other pressurized equipment. The reliability and performance of its movement is directly related to the safety of equipment and people, and with energy conservation and environmental protection are closely related. And some users and design department in the selection, always choose the wrong model. To this end the selection of safety valve to be analyzed.
Second, the definition
The so-called safety valve in the broad sense, including the relief valve, from the management rules point of view, directly installed in a steam boiler or a class of pressure vessels, the necessary conditions must be approved by the technical supervision of the valve, narrowly referred to as the safety valve, Other commonly known as the relief valve. Safety valve and relief valve in the structure and performance are very similar, both in the opening pressure automatically discharge the internal media, in order to ensure the safety of the production plant. The existence of such an inherent similarity in the dry, people often use the two mix, in addition, some production facilities in the rules also provide for the choice of what can be. Therefore, the differences between the two are often overlooked. Thus there are many problems. If you want to make a clear definition of the two, you can follow the "ASME Boiler and Pressure Vessel Code," the first set forth in the definition to understand:
(L) Safety Valve
An automatic pressure relief device actuated by static pressure in front of the valve. It is characterized by having an open full opening action. For gas or steam occasions.
(2) Relief Valve
Also known as a relief valve by the valve medium before the static pressure-driven automatic pressure relief device. It opens proportionally as pressure increases beyond the opening force. Mainly used for fluid applications.
(3) Safety Relief Valve
Safety relief valve, also known as a pressure-driven automatic pressure relief device. Depending on the use of the occasion not only for the safety valve is also suitable as a relief valve. In Japan, for example, safety valves and relief valves are clearly defined, and safety devices commonly used for large storage pressure vessels such as boilers are referred to as safety valves and are installed on pipelines or other facilities The relief valve. However, judging from the regulations of "thermal power generation technology" of the MITI, safety valves such as boilers, superheaters, reheaters, etc., are to be specified as a key part of the safety and security of equipment. In the lower side of the pressure reducing valve needs to be connected with the boiler and turbine occasions, need to install the relief valve or safety valve. So, safety valve requirements than the relief valve more reliable. In addition, judging from the rules and regulations of high-pressure gas regulations of Japan's Ministry of Labor and Ministry of Transport and shipping associations at all levels, we regard the guarantee of emissions as a safety valve without any guarantee The valve of the discharge is called the relief valve. Whether in the country Kai-type or micro-Kai collectively referred to as safety valve.
Overview